straight, gay, solo, whatever.
There isn't enough Principal Darkholme for my taste
Bah, clicked the wrong one.
Chuck Austin jokingly claimed at a comiccon panel once that in his headcanon Kurt has two dicks and that when Mystique takes a male form sometimes the penis works, and as such she's actually Kurt's biological father.
Those points never were actually canon, but since they came from Chuck Austin it refuses to die.
[Though in fairness, apparently they really were considering the Mystique-is-actually-Kurt's-father point.]